perf llvm: Use strerror_r instead of the thread unsafe strerror one

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-5njrq9dltckgm624omw9ljgu@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 4 insertions, 3 deletions

diff --git a/tools/perf/util/llvm-utils.c b/tools/perf/util/llvm-utils.c
index aab855f491ca..33071d6159bc 100644
--- a/tools/perf/util/llvm-utils.c
+++ b/tools/perf/util/llvm-utils.c
@@ -98,11 +98,12 @@ read_from_pipe(const char *cmd, void **p_buf, size_t *p_read_sz)
         void *buf = NULL;
         FILE *file = NULL;
         size_t read_sz = 0, buf_sz = 0;
+        char serr[STRERR_BUFSIZE];
 
         file = popen(cmd, "r");
         if (!file) {
                 pr_err("ERROR: unable to popen cmd: %s\n",
-                       strerror(errno));
+                       strerror_r(errno, serr, sizeof(serr)));
                 return -EINVAL;
         }
 
@@ -136,7 +137,7 @@ read_from_pipe(const char *cmd, void **p_buf, size_t *p_read_sz)
 
         if (ferror(file)) {
                 pr_err("ERROR: error occurred when reading from pipe: %s\n",
-                       strerror(errno));
+                       strerror_r(errno, serr, sizeof(serr)));
                 err = -EIO;
                 goto errout;
         }
@@ -370,7 +371,7 @@ int llvm__compile_bpf(const char *path, void **p_obj_buf,
         if (nr_cpus_avail <= 0) {
                 pr_err(
 "WARNING:\tunable to get available CPUs in this system: %s\n"
-"        \tUse 128 instead.\n", strerror(errno));
+"        \tUse 128 instead.\n", strerror_r(errno, serr, sizeof(serr)));
                 nr_cpus_avail = 128;
         }
         snprintf(nr_cpus_avail_str, sizeof(nr_cpus_avail_str), "%d",